New Perspectives on Computer Concepts 2013: Comprehensive 15th Edition by June Jamrich Parsons,Dan Oja

Exercise 51

You have a small network in your house that uses a wireless router. For the past week, you've seen a black SUV parked outside and its occupant seems to be using a notebook computer. The first step you should take to discover if this person has hacked into your network is: a) knock on the car window and ask; b) call the police; or c) use your router utilities to check who is connected to your network.